Synthesis and chemical reactivity of 3??oxo??2??arylhydrazono??propanenitriles

SO Abdallah, NH Metwally, HF Anwar…

Index: Abdallah, Sanaa O.; Metwally, Nadia H.; Anwar, Hany F.; Elnagdi, Mohamed H. Journal of Heterocyclic Chemistry, 2005 , vol. 42, # 5 p. 781 - 786

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Citation Number: 28

Abstract

Abstract 2-Formyl-2-arylhydrazonoethanenitriles 6b-d where prepared via reacting enaminonitrile 2b, c with aromatic diazonium salts. These reacted with phenylhydrazine to yield bis hydrazones that were converted to arylazopyr-azoles via a novel Vilsmeier-Haack reaction type. Reaction of 6c with hydroxylamine afforded oxime that could be successfully cyclised into arylazoisoxazole. Reaction of 6c with hydrazine hydrate to yield ...